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Contains:  IC 4051, NGC 4911, NGC 4908, NGC 4907, IC 4040, NGC 4896, NGC 4895, NGC 4889, NGC 4881, NGC 4874, NGC 4872, NGC 4869, NGC 4867, NGC 4865, NGC 4860, IC 3949, IC 3946, NGC 4850
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Abell 1656 the Coma cluster, 


Abell 1656 the Coma cluster

Abell 1656 the Coma cluster

Technical card

Resolution: 2714x2078

Dates:April 29, 2017

Orion Blue 1.25": 8x120" bin 2x2
Orion Filtre Luminance: 30x180" -10C bin 1x1
Orion Green 1.25": 12x90" bin 2x2
Orion Red 1.25": 8x120" bin 2x2

Integration: 2.3 hours

Darks: ~45

Flats: ~15

Bias: ~45

Avg. Moon age: 3.46 days

Avg. Moon phase: 12.92%

Bortle Dark-Sky Scale: 3.00

Mean FWHM: 1.80

Temperature: 5.00 job: 1560714

RA center: 194.933 degrees

DEC center: 28.064 degrees

Pixel scale: 1.274 arcsec/pixel

Orientation: 95.658 degrees

Field radius: 0.605 degrees

Locations: Avelanges, Avelanges, Bourgogne, France


First light of my 80ED, bad conditions, windy and seeing :-(
Using Pixinsight drizzle 2X



License: None (All rights reserved)

Sky plot

Sky plot


Abell 1656 the Coma cluster,